RITTERWALD is a pan-European boutique consultancy specializing in the real estate and energy management sectors. Founded in 2011 by Dr. Mathias Hain and Lutz Rittig, the firm has grown from a single client to advising over 100 national and international companies across Europe. With offices in Berlin, Frankfurt am Main, Amsterdam, and London, RITTERWALD has completed more than 500 projects delivering measurable efficiency gains and future-proofing strategies for housing providers, real estate companies, and institutional investors.
Recognized by Handelsblatt as the Best Consultant for Real Estate in 2024 for the second consecutive year, RITTERWALD has established itself as a first mover in sustainable housing consulting. The firm developed the Certified Sustainable Housing Label to make social and environmental performance visible, opening access to ESG investors. Their multinational team speaks over 10 languages and combines deep industry expertise with delivery-focused execution across strategy, restructuring, M&A, digital transformation, and sustainability advisory.